Y90 CTLR EXPERIENCED OPERROR AT 3000 FT WHEN FAILING TO RECOGNIZE AN OVERTAKE SITUATION ON FINAL; ISSUING CORRECTIVE TOO LATE.

Narrative

I WAS WORKING ALL SECTORS COMBINED FOR WHAT IS CALLED THE EVENING PUSH. I HAD BEEN OUT OF WORK FOR APPROX 6 WKS DUE TO SURGERY AND HAD ACCUMULATED ABOUT 11 HRS ON POS SINCE MY RETURN TO WORK. THIS WAS MY FIRST TIME IN AT LEAST 7 WKS WORKING ALL POS COMBINED. I WAS VECTORING A B737 AHEAD OF A PA31 FOR AN ILS RWY 6 TO BDL. I USED ALT SEPARATION INITIALLY AND WAS USING SPD CTL FOR SPACING ON FINAL. I ISSUED 170 KTS TO THE B737 TO THE FINAL FIX AND REDUCED THE PA31 TO 150 KTS. AFTER OBTAINING LATERAL SEPARATION; I CLRED THE BE58 FOR APCH AND THEN NOTICED THE PA31 HAD FAILED TO BLEED OFF SPD WHILE THE B737 HAD SLOWED AHEAD. I ISSUED A SECOND SPD REDUCTION TO THE PA31 TO 130 KTS. NEXT I NOTICED THE B737 HAD REDUCED TO 130 KTS OVER THE GND BUT THE PA31 WAS STILL MAINTAINING 190 KTS OVER THE GND. I THEN ISSUED A CANCELLATION OF APCH CLRNC TO THE BE58 AND A TURN AND ALT TO THE PA31 FOR A NEW APCH. THE PLT DELAYED THE TURN AND SAID WHEN I LEVEL OUT I'LL PULL IT RIGHT BACK. I TOLD PLT B737 HAS SLOWED HE WAS MAINTAINING SPD AND REISSUED INSTRUCTIONS. UNFORTUNATELY; I WAS WORKING WITH 2 INDIVIDUALS THAT WON'T SPEAK TO ME; WITH ONE BEING THE CIC. I TURNED AFTER THE PA31 MADE THE TURN AND SAW THE CIC WATCHING THE OP ON THE BRITE. HE SAID NOTHING TO ME ABOUT IT; SO I FELT I HAD MAINTAINED SEPARATION.